BRUSSELS — European Union leaders, faced with a staggering migration crisis and deep divisions over how to tackle it, managed to agree early Thursday to send 1 billion euros ($1.1 billion) to international agencies helping refugees at camps near their home countries The leaders also agreed to set up “hotspots” by the end of November where EU experts can quickly register and identify people eligible for refugee protection, said European Council President Donald Tusk, who chaired an emergency EU summit in Brussels. The move is intended to also quickly filter out economic migrants who are unlikely to qualify for asylum in Europe. “The measures we have agreed today will not end the crisis.